POLICE have employed a sniffer dog to raid buses in Coventry after complaints about passengers smoking cannabis.

The rush hour crackdown took place on Travel Coventry buses on Friday.

Tip-offs from members of the public led a team of two uniformed officers, six PCSOs, a dog handler and sniffer dog to stop travellers on thenumber 21 bus. Stunned passengers watched as officers walked up and down their bus with Cato, a four-year-old springer spaniel.

The operation was branded a success after two passengers were hauled off and charged during the hour-long crackdown after the dog detected cannabis on their clothing.